Metals that do not react or react only slightly to magnetic fields are called:

Metals that do not react or only react slightly to magnetic fields are described by various terms that reflect their magnetic properties. While "nonmagnetic metals" specifically refers to metals that exhibit negligible response to magnetic fields, "diamagnetic metals" are those that are repelled by magnetic fields and do not retain any magnetization in the absence of an external field. On the other hand, "paramagnetic metals" are those that do have some attraction to magnetic fields, albeit weakly.

The key aspect is that not all of these categories denote metals that respond the same way to magnetic fields; however, they all encompass responses that are relatively low compared to strongly magnetic metals. Therefore, identifying these three types collectively captures the various ways in which metals interact with magnetic fields in a limited manner. Selecting "all of the above" acknowledges that each term describes a group of metals that exhibit slight or no reactivity to magnetic fields, making it the most comprehensive answer among the choices provided.